Taking vs not-taking finasteride

Here are two examples that I would like you to comment on

1.someone took finasteride from 25 years old to 40 years old, then stopped taking it.

2.that same person never took finasteride.

Who will have more hair at 50 years old? what Im basically trying to figure out is what’s better for your hair, taking finasteride then stopping completely, or never taking it in the first place? thanks!

The studies are clear from Merck.  Men who take finasteride will have less hair loss over time.  I have seen this in my practice, when men on finasteride who stop it, regardless of age, lose hair within the first 3 months and that loss can be dramatic. I have had men on finasteride for 20+ years and if they stop it, they always lose their natural hair that was held in place by finasteride.